android - application displaying videos

how do i display videos retrieved from resources in my android application ?

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MediaPlayer mp = new MediaPlayer();
mp = MediaPlayer.create(context, R.raw.vid);
mp.start();

i have placed a vid.3gp file in my res/raw folder..

i am getting NullPointerException.. what changes do i need to make

why so??

do we need something called as Surface Holder or something similar ?

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using the MediaPlayer you should be able to play video